Make the HID Report Parser Get/Set Report Item routines fail if a NULL pointer...

Make the HID Report Parser Get/Set Report Item routines fail if a NULL pointer to a report item is given.

Minor visual enhancement to the HIDReportViewer project.

LUFA/Drivers/USB/Class/Common/HIDParser.c

@@ -290,6 +290,9 @@ uint8_t USB_ProcessHIDReport(const uint8_t* ReportData,
 bool USB_GetHIDReportItemInfo(const uint8_t* ReportData,
                               HID_ReportItem_t* const ReportItem)
 {
+	if (ReportItem == NULL)
+		return false;
+
 	uint16_t DataBitsRem  = ReportItem->Attributes.BitSize;
 	uint16_t CurrentBit   = ReportItem->BitOffset;
 	uint32_t BitMask      = (1 << 0);
@@ -320,6 +323,9 @@ bool USB_GetHIDReportItemInfo(const uint8_t* ReportData,
 void USB_SetHIDReportItemInfo(uint8_t* ReportData,
                               HID_ReportItem_t* const ReportItem)
 {
+	if (ReportItem == NULL)
+		return;
+
 	uint16_t DataBitsRem  = ReportItem->Attributes.BitSize;
 	uint16_t CurrentBit   = ReportItem->BitOffset;
 	uint32_t BitMask      = (1 << 0);

Projects/HIDReportViewer/HIDReportViewer.c

@@ -140,7 +140,7 @@ int main(void)
 							 ((ReportSizeFeatureBits >> 3) + ((ReportSizeFeatureBits & 0x07) != 0)));
 				}
 				
-				printf_P(PSTR("\r\n\r\nReport Items: %d\r\n"), HIDReportInfo.TotalDeviceReports);
+				puts_P(PSTR("\r\nReport Items:\r\n"));
 				for (uint8_t ItemIndex = 0; ItemIndex < HIDReportInfo.TotalReportItems; ItemIndex++)
 				{
 					const HID_ReportItem_t* RItem = &HIDReportInfo.ReportItems[ItemIndex];